43 lines
912 B
C
43 lines
912 B
C
// time ./realloc_speed_test_c 50000 10000 100000
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "xmalloc.h"
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int main(int argc, char *argv[])
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{
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if (argc != 4) {
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fputs("Usage: realloc_speed_test_cpp iterations nobj maxsz\n", stderr);
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exit(-1);
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}
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size_t iterations = (size_t)atoi(argv[1]);
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size_t nobj = (size_t)atoi(argv[2]);
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size_t maxsz = (size_t)atoi(argv[3]);
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void **p = malloc(sizeof(void *) * nobj);
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memset(p, 0, sizeof(void *) * nobj);
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size_t i, idx, sz;
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for (i = 0; i < iterations; i++) {
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idx = (size_t)(rand() % (int)nobj);
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sz = i;//(size_t)(rand() % (int)maxsz);
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p[idx] = realloc(p[idx], sz);
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if (sz && !p[idx]) {
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fprintf(stderr, "Alloc error at i = %lu\n", i);
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exit(-1);
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}
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}
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for (i = 0; i < nobj; i++)
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free(p[i]);
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free(p);
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printf("Success, iterations = %lu, nobj = %lu, maxsz = %lu\n", iterations, nobj, maxsz);
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return EXIT_SUCCESS;
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}
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